abscisicadj.
/əbˈsɪsɪk/, /abˈsɪsɪk/, U.S. /æbˈsɪsɪk/ Biochemistry.
abscisic acid n. a plant hormone which promotes seed and bud dormancy and inhibits germination.Abscisic acid has a monocyclic molecule with an isoprenoid side chain. Formula: C15H20O4.
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the world > life > biology > substance > process stimulators or inhibitors > hormone > [noun] > in plants
hormone1911
wound hormone1921
plant hormone1932
phytohormone1933
auxin1934
heteroauxin1935
florigen1936
traumatic acid1939
abscisin1961
zeatin1963
cytokinin1965
antheridiol1967
abscisic acid1968
oogoniol1975
1968 F. T. Addicott et al. in Science 29 Mar. 1493/3 Abscisin II was the name given to the second of two abscission-accelerating substances isolated from cotton fruit... Some confusion has developed from the use of the two names, abscisin II and dormin... We now propose the term abscisic acid.
1978 Nature 12 Oct. 571/2 The known and accepted hormonal regulators of plant growth and development comprise the auxins, the gibberellins, the cytokinins, abscisic acid and (perhaps) ethylene.
1993 K. S. Robinson Green Mars (new ed.) 185 Growth ceased,..and amounts of abscisic acid grew in some leaves until they fell off.
2007 Gazette (Montreal) (Nexis) 6 Oct. i11 Lack of moisture triggers the production of abscisic acid.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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adj.1968